a reduction in the size of a person's pupil in old age caused by muscle atrophy that control dilation of a pupil. This restricts the amount of light to fall on retina.

SENILE MIOSIS: "Senile meiosis is seen in older people with atrophy of the muscles that control the pupil."
Cite this page: N., Pam M.S., "SENILE MIOSIS," in, April 13, 2013, (accessed October 19, 2021).